如何选择带空格的班级
如何选择像 class="boolean optional" 这样的类?
How do I select a class like class="boolean optional" ?
我试过这个:
.boolean optional {CSS}
.boolean_optional {CSS}
推荐答案
正如 Zepplock 所说，这实际上是一个属性中的两个类:boolean 和 optional.空格不是类名的一部分；它充当分隔符.
As Zepplock says, that's actually two classes in a single attribute: boolean and optional. The space is not part of a class name; it acts as the separator.
这三个选择器都会匹配它:
These three selectors will all match it:
.boolean
.optional
.boolean.optional
最后一个选择器只选择这个元素，因为它有两个类.
The last selector only picks up this element as it has both classes.
你从不在链接类选择器时包含空格，甚至像这样:
You never include a space when chaining class selectors, not even like this:
.boolean .optional
选择 .optional 元素，这些元素包含在单独的 .boolean 元素中.
As that selects .optional elements that are contained within separate .boolean elements.
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